After the interim report after lunch, the members of the once again dispersed to their respective posts.

Jin and the continue their analysis of the submarine at the .

Now, Jin and Reiko, together with the , are on board one of the submarines, which is designed to look like a .

Incidentally, Neige and Rouge are taking a nap in their now cozy .

"What do you think, Mr. Jin?"

"It's ...... white, isn't it?"

That was Jin's first impression.

"Yes, it is. That means this submarine was meant to be used by the masters."

"I suppose that's true."

"I can only guess, but not be certain, as to its use for undersea excursions, observing the behavior of the combat submarine we have built, and to get a closer look at undersea battles ......."

"No, that's still good enough."

<, and we won't be able to guess as well as the at Jin.

"This propulsion system is the same as the Aqua Thruster that Jin-dono made, isn't it?"

"Is that so?"

"The outside of the exterior is an . According to Jin-dono, it's made of beryllium copper with added magic power, isn't it?

"Yes. I suppose it's used because it's resistant to corrosion."

"I suppose that's true."

Adamantite is strong but heavy and is produced in small quantities. Therefore, it was thought that must have used .

"Likewise, the inside of the exterior is made of light silver. I guess they were trying to make it lighter."

"I wonder why they didn't use light silver on the outside as well?"

Orihalcon is a copper alloy and light silver is titanium, so the specific gravity of light silver is a little less than half.

"Well, I wondered that too. ...... probably <."

"A sense of fun?"

"You see, copper is a metal with a reddish hue. I wonder if some of the < liked that color."

"......"

Jin could not understand the taste or the way of thinking of the <>, and only the <> could come up with such an idea, even if it is just a guess.

"The control system is a system via the , isn't it?"

"In other words, you mean it's on autopilot?"

"Yes. In some cases, it can be set to semi-automatic control.

In this case, means that the pilot only needs to determine the speed and direction of travel.

The control core compensates for the ship's tilt and subtle directional adjustments.

A similar system was also installed by Jin in various vehicles.

"What about armament?"

This was my first concern.

If they were to engage in simulated combat, or proxy combat, what exactly would their weapons be?

"Hmmm. It is equivalent to the sonic bombs and sonic booms used by Jin-dono at ......."

It is a directional acoustic weapon.

"It is also a <> that applies a <>."

A force spear?

"Mm. In short, think of it as a spear made from a solid physical barrier."

"Ah, I see. ......"

Jin was impressed. < into a disk instead of a sphere, but I had never tried to make it into a spear .......

However, I could understand that it would be similar to the magic technique called <> which is based on <>.

"These are the results of our investigation of this submarine. I will put the details in a report."

"Please do."

"Yes."

* * * *

The <> continued their investigation of the other submarine, a submarine with a very <> design.

Jin and Reiko go back to the investigation of the submarine that seems to be the origin of the submarine.

"Well, it's a good thing I listened to the explanation of the <>."

The armament of this submarine was almost the same as the one we had just heard about.

"Underwater, ray weapons would be weakened, fire would be useless, and ice would be ......."

However, the ship was equipped with a weapon similar to the <> known to Jin.

"Is this ...... this also remotely controlled ......?"

Jin imagined that if it was remotely piloted by the Golem brain, it would be aimed at the enemy quite reliably.

It would be in the same category as computer-controlled missiles.

But upon closer inspection, he found that it was not a torpedo.

"Made of adamantite, drill ...... or ......?"

<.

Jin imagined that he would probably come back with a hole in his opponent.

"It's eco-friendly or egregious,......, but it seems to be <>," he said.

The <> does not like weapons of mass destruction, the <> had said.

It is understandable that they would not use such weapons, especially if the battle is for entertainment.

"Weapons that minimize destruction. That would be helpful."

Jin continues his investigation of the .

* * * * * * * * * * * * * *

At that time, in the eastern part of the former Leonard Kingdom, the ruins of Zigosaldo, north of the Darth River, and further east ...... that is, the coastal area.

Here, too, there was a facility of .

< of the had set up bases and facilities on the eastern shore of the Loren continent, and were the .

About 5000 years ago.

Some had already established themselves on the planet Arus, some were communicating with the natives, and some were living in seclusion.

However, seclusion does not mean that they are shutting themselves away and doing nothing.

They left all productive activities to automata and golems, and spent their days enjoying daily entertainment.

< did not call them "hermits".

And even though the technology of the was in retreat, the standard was still high, and some of it was still in operation after all these years.

A certain facility on the eastern coast of the former Leonard Kingdom is also in operation, and is formally controlled by a <> with <>.

It seems that the who built and managed the facility had a management policy of simply enjoying watching it on a monitor.

The owner of the facility, , had frequent mock battles with , who had <>, and repeatedly won and lost.

The <> was automatically awakened from its dormancy when it was reactivated.